Praise binary rise (4)
I believe the answer is:
laud
'praise' is the definition.
(I know that laud is a more specific form of the action praise)
'binary rise' is the wordplay.
'binary' becomes 'dual' (synonyms).
'rise' says the letters should be written in reverse.
'dual' reversed gives 'LAUD'.
(Other definitions for laud that I've seen before include "Praise, magnify" , "Praise highly" , "Praise acclaim" , "Praiseworthy" , "'Praise, glorify (4)'" .)